Cod sursa(job #2155473)

Utilizator DordeDorde Matei Dorde Data 7 martie 2018 21:03:51
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.34 kb
#include <iostream>
#include <cstdio>
using namespace std;
int const nm=100007;
unsigned int v[nm];
int main()
{
    int n,q,i,m,s,t,c,nr,poz;
    freopen("cautbin.in","r",stdin);
    freopen("cautbin.out","w",stdout);
    scanf("%d",&n);
    for(i=1;i<=n;++i)
        scanf("%d",&v[i]);
    scanf("%d",&q);
    for(i=1;i<=q;++i)
    {
        scanf("%d %d",&c,&nr);
        if(!c)
        {
            s=1,t=n;poz=-1;
            while(s<=t)
            {
                m=(s+t)/2;
                if(v[m]==nr)
                    poz=m,s=m+1;
                if(v[m]>nr)
                    t=m-1;
                if(v[m]<nr)
                    s=m+1;
            }
            printf("%d\n",poz);
        }
        if(c==1)
        {
            s=1,t=n;
            while(s<=t)
            {
                m=(s+t)/2;
                if(v[m]<=nr)
                    poz=m,s=m+1;
                if(v[m]>nr)
                    t=m-1;
            }
            printf("%d\n",poz);
        }
        if(c==2)
        {
            s=1,t=n;
            while(s<=t)
            {
                m=(s+t)/2;
                if(v[m]>=nr)
                    poz=m,t=m-1;
                if(v[m]<nr)
                    s=m+1;
            }
            printf("%d\n",poz);
        }
    }
    return 0;
}